In-line shutoff valves

Patent metadata

Field	Value
Publication number	US-10001026-B2
Application number	US-201615159268-A
Country	US
Kind code	B2
Filing date	May 19, 2016
Priority date	May 19, 2016
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

An in-line shutoff valve includes a valve body with an inlet chamber, an outlet chamber, and a poppet seat disposed between the inlet and outlet chambers. A poppet is movably disposed within the valve body and has an open and closed position. The poppet seats against the poppet seat in the closed position, fluidly separating the inlet chamber from the outlet chamber. The poppet is unseated from the poppet seat in the open position, fluidly coupling the inlet and outlet chambers. A manifold with a servo port and a vent port is disposed within the valve body between the inlet and outlet chambers, the vent port being in fluid communication with the servo port to cool valve internal structures when the poppet is in the closed position.

First claim

What is claimed is:

1. An in-line shutoff valve, comprising:
a valve body having an inlet chamber, an outlet chamber, and a poppet seat disposed between the inlet chamber and the outlet chamber;
a poppet movably disposed within the valve body and defining a closed position and an open position of the in-line shutoff valve,
wherein the poppet is seated against the poppet seat in the closed position such that the inlet chamber is fluidly separated from the outlet chamber,
wherein the poppet is displaced from the poppet seat in the open position such that the inlet chamber is in fluid communication with the outlet chamber; and
a manifold disposed within the valve body between the poppet and the outlet chamber and having a servo port and a vent port, wherein the vent port is in fluid communication with the servo port when the poppet is in the closed position to flow fluid from the vent port to the servo port through the valve body to cool the in-line shutoff valve,
wherein the poppet has a poppet passage configured to selectively couple the servo port with the vent port according to position of the poppet.

2. The in-line shutoff valve as recited in claim 1 , wherein the poppet extends about a longitudinal axis of the valve body, the poppet passage extending radially through the poppet relative to the longitudinal axis.

3. The in-line shutoff valve as recited in claim 1 , further comprising a check valve seated in the poppet passage and arranged to fluidly separate the vent port from the servo port when pressure at the servo port exceeds pressure at the vent port.

4. The in-line shutoff valve as recited in claim 1 , further comprising a relief valve seated in the poppet passage and arranged to fluidly separate the vent port from the servo port when pressure differential between the vent port and the servo port exceeds a predetermined value.

5. The in-line shutoff valve as recited in claim 1 , further comprising a guide tube fixed to the manifold, the poppet being slideably received about the guide tube.

6. The in-line shutoff valve as recited in claim 5 , wherein the guide tube extends about a longitudinal axis of the valve body and defines an axial slot, wherein the axial slot is radially offset from the longitudinal axis and extends axially along the guide tube.

7. The in-line shutoff valve as recited in claim 5 , wherein the guide tube defines a guide tube channel and an orifice extending through the guide tube, the orifice fluidly coupling the guide tube channel with the servo port.

8. The in-line shutoff valve as recited in claim 1 , further comprising an inner seal ring extending about the poppet and disposed between the poppet and the manifold.

9. The in-line shutoff valve as recited in claim 1 , wherein the poppet and the manifold define therebetween a vent chamber, the vent chamber being in fluid communication with the servo port when the poppet is in the closed position.

10. The in-line shutoff valve as recited in claim 1 , further comprising an end cap disposed between the poppet seat and the manifold.

11. The in-line shutoff valve as recited in claim 10 , wherein the end cap and the poppet define therebetween a servo chamber, the servo chamber being in fluid communication with the vent port when the poppet is in the closed position.

12. The in-line shutoff valve as recited in claim 10 , further comprising an outer seal ring extending about the poppet and disposed between the poppet and the end cap.

13. An in-line shutoff valve arrangement, comprising:
an in-line shutoff valve, comprising:
a valve body having an inlet chamber, an outlet chamber, and a poppet seat disposed between the inlet chamber and the outlet chamber;
a poppet movably disposed within the valve body and defining a closed position and an open position of the in-line shutoff valve,
wherein the poppet is seated against the poppet seat in the closed position such that the inlet chamber is fluidly separated from the outlet chamber,
wherein the poppet is displaced from the poppet seat in the open position such that the inlet chamber is in fluid communication with the outlet chamber; and
a manifold disposed within the valve body between the poppet and the outlet chamber and having a servo port and a vent port, wherein the vent port is in fluid communication with the servo port when the poppet is in the closed position to flow fluid from the vent port to the servo port through the valve body to cool the in-line shutoff valve,

wherein the poppet has a poppet passage configured to selectively couple the servo port with the vent port according to position of the poppet; and
a vent fluid source coupled to the vent port configured and adapted to provide a pressurized fluid to the vent port at a pressure that is greater than ambient pressure.

14. The in-line shutoff valve arrangement as recited in claim 13 , further comprising a servo fluid source fluidly coupled to the servo port, the servo fluid source configured and adapted to provide a pressurized fluid to the servo port with a pressure greater than pressure of the vent fluid source.

15. The in-line shutoff valve arrangement as recited in claim 13 , wherein the poppet passage is configured to selectively couple the servo port with the vent port according to position of the poppet.

16. The in-line shutoff valve arrangement as recited in claim 13 , further comprising a check valve seated in the poppet passage and arranged to fluidly separate the vent port from the servo port when pressure at the servo port exceeds pressure at the vent port.

17. The in-line shutoff valve arrangement as recited in claim 13 , further comprising a relief valve seated in the poppet passage and arranged to fluidly separate the vent port from the servo port when a pressure differential between the vent port and the servo port exceeds a predetermined value.

18. A method of cooling an in-line shutoff valve, comprising:
moving a poppet disposed within the in-line shutoff valve to a closed position;
fluidly connecting a vent port with a servo port; and
flowing a coolant fluid from the vent port to the servo port through an interior of the in-line shutoff valve, wherein flowing the fluid comprises flowing the fluid through a poppet passage defined within the poppet and configured to selectively couple the servo port with the vent port according to position of the poppet.

19. The method of cooling an in-line shutoff valve as recited in claim 18 , further comprising:
moving the poppet from the open position;
fluidly separating the vent port from the servo port; and
moving the poppet to the closed position.

Assignees

• Hamilton Sundstrand Corp
• Hamilton Sunstrand Corp

Inventors

• Schwalm Gregory K
• Mcbrien Gary M

Classifications

• Y10T137/6579

  Circulating fluid in heat exchange relationship · CPC title

• Y10T137/3367

  Larner-Johnson type valves; i.e., telescoping internal valve in expanded flow line section · CPC title

• F16K17/02

  opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00) · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F16K1/126 Primary

  actuated by fluid · CPC title